The Rider GPS Tank Bag by Cycle Case is made of Maxtura nylon ballistic material and has Reflect-A-Light retro-reflective logos for added visibility. As well as coming with a no hassle "5 Year Warranty", the Rider Tank Bag is packed with all the features needed for your ride. You are able to store and utilize your GPS and/or map in the top see-through pocket, you will find other pockets throughout the bag that can accommodate your wallet, keys, rain wear and other items that you need to haul around on your commute. This tank bag will fit most style of bikes and will accommodate both metal and plastic tanks.